| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 11066 |
91.8%
|
| 2 | 1 to 3 times a year | 745 |
6.2%
|
| 3 | 4 to 6 times a year | 120 |
1%
|
| 4 | 7 to 9 times a year | 39 |
0.3%
|
| 5 | 10+ times a year | 79 |
0.7%
|
| 8 | don't remember | 3 |
0%
|
| Sysmiss | 863 |